Guys,

Does anyone have experience with this kind of cheap sand blasting guns? I'm looking for something to blast small pathces of rust (max 4 inches dia.) without spending loads on "proper" kit I'm not going to use more then once a year...

Depends very much on the size of your compressor --- BIG air flow required.

Alternative is a sand blasting attachment for a pressure washer -- much more effective a only reasonable sized pressure is washer required. Only draw back is because you are using water steel & iron parts will get a light film of new rust almost instantly so dunk them in vinegar immediately.

i got the same thing from lidl or aldi for £10

Thats a recirculating gun IIRC, which is handy as it causes alot less spillage than a basic gun. I used a basic cheap gun (no recirc) on a small compressor and for small areas it was more than adequate, but messy.
I also did do a whole engine bay (seams only, ready for stitch welding) with a small compressor setup which took a long time waiting for the pressure to build back up, but the blasting was effiecent enough.

I've got one but haven't tried using it yet..... Mainly because I haven't got round to getting a full face mask. Even though silicosis is mostly related to using sand I don't fancy a lungfull of the alternatives!!!

Excellent piece of kit for what you describe. It is perfect for removing small patches of rust

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Originally posted by JohnN
Excellent piece of kit for what you describe. It is perfect for removing small patches of rust

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I've used the cheap spot blaster from Aldi, it comes with aluminium oxide for blasting steel. It worked quite well. I also used a standard gun with glass beads on the aluminium engine casings which also worked well, although I would recommend doubling up the compressors if you are using the cheap lower capacity ones (also from Aldi). I use two connected together giving twice the capacity and increased flow.